Boron as an element was first used by the Tibetan and Egyptian Civilizations. Bor, IX. It was used by the Arabs in making medicine. The first sassolite sources in the world were seen in Tuscani in Italy and in Balıkesir in our country. Boric acid is formed as a result of the reaction of colemanite and sulfuric acid or borax-mineral acid. Boron, which cannot be found freely in nature, is a hard and white element. It is found in nature in the form of minerals. Different isotopes of boron also exist in nature. The 10B isotope is used in the nuclear industry due to its high thermal neutron capture capacity. Additionally, since boron can form compounds with different elements, it is used in different areas of industry. Deposits of the boron element, consisting of compounds bonded with oxygen, are abundant in Turkey and have high economic importance. When we consider it from the perspective of living things, boron is an element that must be taken from outside into the organism and is necessary for the maintenance of health. Being able to use boron in cancer treatment without damaging healthy cells with its neutron capture feature is just one of the applications of boron in the field of health. Based on this information, this section includes the structure of boric acid, its general properties, its occurrence in nature, its application areas, its effects on organisms, experimental studies and its medical use.